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Возможно, зона выделения газа PROCESS DESCRIPTION
Hydrotreated naphtha feed is combined with recycle
hydrogen gas and heat exchanged against reactor effluent.
The combined feed is then raised to reaction temperature
in the charge heater and sent to the reactor section. Four
adiabatic, radial-flow reactors are arranged in a vertical
stack. Catalyst flows vertically by gravity down the stack,
while the charge flows radially across the annular catalyst
beds. The predominant reactions are endothermic, so an
interheater is used between each reactor to reheat the
charge to reaction temperature.
The effluent from the last reactor is heat exchanged
against combined feed, cooled and phase split into vapor
and liquid products in a separator. The vapor phase is rich
in hydrogen gas, and a portion of the gas is compressed
and recycled back to the reactors. The net hydrogen-rich
gas is compressed and charged together with the separator
liquid phase to the product recovery section. http://scienzechimiche.unipr.it/didattica/att/42d9.file.pdf
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